diff --git a/build/debug/main.exe b/build/debug/main.exe
index d216120..616bc89 100644
Binary files a/build/debug/main.exe and b/build/debug/main.exe differ
diff --git a/include/sim.h b/include/sim.h
index 61b89d9..e156e66 100644
--- a/include/sim.h
+++ b/include/sim.h
@@ -247,7 +247,7 @@ void vehicleDynamics(struct sVars &Vars, int t) {
                    Vars.I22 * Vars.pitchdot * Vars.yawdot) /
                   Vars.I33;
 
-  if (t < 1) {
+  if (t < 1) { // TODO: Initial conditions should be set at sim start
     Vars.x = 0;
     Vars.y = 0;
 
@@ -298,6 +298,7 @@ void vehicleDynamics(struct sVars &Vars, int t) {
   // TODO: Maybe we should just have a `Vars` for the last time step and at the
   // end of each time step make a copy of it
 
+  // TODO: Delete, section not needed
   // Set "prev" values for next timestep
   Vars.I11prev = Vars.I11;
   Vars.I22prev = Vars.I22;
diff --git a/src/main.cpp b/src/main.cpp
index 4551a8c..a5c6826 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,3 +1,5 @@
+#define M_PI 3.14159265359
+
 #include <cmath>
 #include <fstream>
 #include <iostream>